Aerials
High torsional rigidity and tilt stability

The adjustment of external parabolic aerials, such as those used for communication with satellites close to the Earth, requires highly precise positioning. This applies both for the azimuth (angle between the meridan and vertical plane of a celestial body) as well as the elevation angle. For the control of these aerials with a dish diameter of up to 17 metres, high torsional rigidity and tilt stability with large reductions are required. For this purpose, the Nabtesco's compact RV gears with or without a hollow shaft are ideally suited.

Thanks to the unique trochoidal/pin construction, the gears achieve a high repeat accuracy and path accuracy. This is also indispensable for the satellite control. The integrated angular ball bearings absorb the forces and moments of wind gusts and easily support larger aerials. In addition, the Nabtesco gears combine high rated torques with a backlash well below one angular minute. In the event of load peaks, such as in emergency stop situations, they can accommodate five times their rated torque.